Pig-forceps.



H. M. BOSTON.

PIG FORGE-PS.

APPLICATION FILED 0019, 1912. RENEWED JUNE 2a, 1913. 1 U71 ,1 37.,

Patented Aug. 26, 1913.

UNITED STATES PATENT OFFICE.

HENRY M. BOSTON, OF NEW BERLIN, ILLINOIS, ASSIGNOR T0 SHERMAN HOG GREASE-R 00., OF PEORIA, ILLINOIS, A CORPORATION OF WEST VIRGINIA.

PIG-FOROEPS.

Patented Aug. 26, 1913.

Application filed. October 9, 1912, Serial No. 724,822. Renewed June 23, 1913. Serial No. 775,452.

To all whom it may concern:

Be it known that I, HENRY M. BosToN, a citizen of the United States, residing at New Berlin, in the county of Sangamon and State of Illinois, have invented new and useful Improvements in Pig-Forceps, of which the following is a specification.

This invention relates to an improvement in forceps for the use of veterinarians and is directed particularly to a construction in which the adjustment is simply and easily accomplished and at all times within the convenient control of the operator.

The main object of the present invention is the provision of a forceps of this type in which the adjustment desired from open to closed position can be readily accomplished without longitudinal movement of the parts, which longitudinal movement has been found objectionable in devices of this charactcr.

The invention in its preferred form of details will be described in the following specification, reference being had to the accompanying drawing, in which Figure 1 is a perspective view of the forceps open. Fig. 2 is a bottom plan view of the forceps closed. Fig. 3 is a transverse sectional view with the operative end of the forceps open in full lines and closed in dotted lines.

Referring particularly to the accompanying drawings, the improved forceps comprises a body 1 preferably in the form of a plate which is gradually narrowed toward the handle end. The side edges of the plate are rolled to form tube-like guides 2, which guides are arranged wholly on the lower side of the plate so as to present rounded edges for the plate while at the same time leaving the latter wholly clean on the upper surface. Mounted in each guide member is an operating rod 3 arranged for rotatable movement in the member, one end of the rod being bent laterally and then forwardly to form a handle member 4: and the opposite end of the rod being bent into an approximately semi-circular form to provide a gripping member 5. One of the guide members 2 is of slightly less length than the other whereby one of the gripping members is disposed and operates in a plane beyond the other so that the members can pass each other in movement to and from operative position as will be readily apparent from Fig. 2 of the drawing. On the underside of the plate in the channel formed by the guide members 2 is arranged a triangularshaped projection 6 the side ed es of which form limits for the handle members to indicate the extremely closed position of the gripping member. In addition the member 6 forms a convenient hand-hold for the manipulation of the device in adjusting the gripping members.

From the above description the use of the improvement will be readily understood it being obvious that the adjustment of the gripping members to the extent desired is accomplished by a movement of the handles to induce a rotary movement of the rods and a corresponding opening or closing movement of said gripping members. The position of the handle members in contact with the member 6 indicates the closed position of the gripping members.

WVhat is claimed is:

A forceps comprising a body formed on each longitudinal edge with a tubular guide member, a rod mounted in each guide member for rotary movement therein, a handle formed at one end of the rod, a clamping member formed at the opposing end of the rod, one of the said guide members being of less length than the other to permit the clamping members to pass each other in operation.

In testimony whereof I aflix my signature in presence of two witnesses.

HENRY M. BOSTON.

WVitnesses:

A. G. KNor'rs, THOMAS J. RYAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

